Abstract
Poly(2, 5-thienylene) [1] and poly(3-methyl-2, 5-thienylene) [2] easily react with several metal halides to give dark brown or black adducts which show electric conductivities of 10-7-10-3 S·cm-1 depending on the combination of the polymer and the dopant. The highest conductivity (2.0×10-3 S·cm-1) is obtained in the case of [2] doped with SnCl4. Comparison of properties of various adducts reveals that amount of metal halides adsorbed to the polymer is relatively large when the metal halides having strong Lewis acidity are used and t hat adducts of the polymer with the metal halides having strong Lewis acidity show high spin concentration in the ESR spectra.
